文本加密解密

来源:互联网 时间:2016-03-23

第一步:把如下代码加入到<head>区域中

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function Encrypt(theText) {
output = new String;
Temp = new Array();
Temp2 = new Array();
TextSize = theText.length;
for (i = 0; i < TextSize; i++) {
rnd = Math.round(Math.random() * 122) + 68;
Temp[i] = theText.charCodeAt(i) + rnd;
Temp2[i] = rnd;
}
for (i = 0; i < TextSize; i++) {
output += String.fromCharCode(Temp[i], Temp2[i]);
}
return output;
}
function unEncrypt(theText) {
output = new String;
Temp = new Array();
Temp2 = new Array();
TextSize = theText.length;
for (i = 0; i < TextSize; i++) {
Temp[i] = theText.charCodeAt(i);
Temp2[i] = theText.charCodeAt(i + 1);
}
for (i = 0; i < TextSize; i = i+2) {
output += String.fromCharCode(Temp[i] - Temp2[i]);
}
return output;
}
//  End -->
</script>


第二步:把如下代码加入到<body>区域中

<center>
<form name=encform onsubmit="return false;">
    <textarea name=box1 rows=5 cols=50>Typhoon Start JavaScript Fairyland

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